Health and ageing in Nairobi's informal settlements-evidence from the International Network for the Demographic Evaluation of Populations and Their Health (INDEPTH): a cross sectional study

Longitudinal Studies of Aging in Sub-Saharan Africa: Review, Limitations, and Recommendations in Preparation of Projected Aging Population

Background and Objectives

The United Nations has projected a 218% increase in older people in Sub-Saharan Africa (SSA) between 2019 and 2050, underscoring the need to explore changes that would occur over this time. Longitudinal studies are ideal for studying and proffering solutions to these changes. This review aims to understand the breadth and use of longitudinal studies on aging in the SSA regions, proffering recommendations in preparation for the projected aging population.

Research Design and Methods

This paper is the third of a four-part series paper of a previous systematic mapping review of aging studies in SSA. We updated the search (between 2021 and 2023) and screened the titles/abstracts and full-text articles by a pair of independent reviewers. Data were extracted using a standardized data-charting form, identifying longitudinal studies in SSA.

Results

We identified 193 studies leveraging 24 longitudinal study data sets conducted at 28 unique sites. The World Health Organization's Study on Global AGEing and Adult Health (WHO-SAGE) (n = 59, 30.5%) and Health and Aging in Africa: A Longitudinal Study of an INDEPTH Community in South Africa (HAALSI) (n = 51, 26.4%) were the most used longitudinal data sets. Four studies used more than one longitudinal study data set. Eighteen of the longitudinal study data sets were used only in 1-4 studies. Most (n = 150, 77.7%) of the studies used a cross-sectional analytical approach.

Discussion and Implications

Longitudinal studies on aging are sparingly being utilized in SSA. Most analyses conducted across the longitudinal data set were cross-sectional, which hindered the understanding of aging changes that occurred over time that could better inform aging policy and interventions. We call for funding bodies, such as WHO-SAGE, to develop funding competitions that focus on conducting longitudinal analyses, such as structural equation modeling, highlighting changes occurring among the aging population in SSA.

Do the living arrangements of older people matter for the family transfers they receive? Evidence from Senegal

In the absence of broad-based formal health insurance and social protection systems in much of sub-Saharan Africa, the family acts as the key provider of support to older people. This paper furthers our understanding of family support mechanisms in the context of low-income countries by focusing on support from outside the household, which has been less studied so far. By using the data of 3,114 people aged ≥50 from the second round of the Senegalese Poverty and Family Structure Survey, the paper examines how the living arrangements of older people are associated with receiving transfers from non-coresident kin. Our findings highlight a net advantage of women receiving net positive family transfers compared to men for some living arrangements. Results also indicate that living without a husband or an adult significantly increases the likelihood of older women receiving support from non-resident family members compared to those who live with both spouse and a younger adult child. However, these differences are not significant among older men. These results suggest that in constrained settings, decision-makers should consider older people's living arrangements and potential external family support when designing public policies towards them, so as to optimise the impact of policy and interventions on their welfare.

Prevalence and Social Risk Factors of Functional Limitations Among Slum-Dwelling Older Adults: Findings From the Nairobi Urban Health and Demographic Surveillance System

Objective: In this study, we investigate the patterns and the risk factors of functional limitations in a sample of 1323 slum-dwelling older adults in Kenya who participated in the Nairobi Urban Health and Demographic Surveillance Systems. Methods: We conducted crude and adjusted logistic regression analyses to evaluate the associations. Results: The prevalence of activities of daily living (ADL) and instrumental ADL (IADL) limitations were approximately 5% and 8%, respectively; some 4.5% reported both limitations. Estimates varied significantly between sexes and age (p < .001). After adjustments, age, female, and Garre ethnic group were associated with ADL and IADL limitations. ADL decline was determined by co-residence (aOR = 0.93, 95% CI = 0.34-0.95), household size (aOR = 1.19, 95% CI = 1.04-1.37) and educational level (aOR = 0.45, 95% CI = 0.05-0.72). Conclusions: Older slum-dwellers in Nairobi experience functional impairments with marked age and sex differences. These findings may encourage salient policy planning and public health interventions to promote healthy aging in informal settlements.

A systematic review of physical and psychological health and wellbeing of older women in Sub-Saharan Africa

BACKGROUND

Sub-Saharan Africa (SSA) has the fastest growing proportion of older adults in the world, the majority of whom are women. Global health agendas, however, continue to deprioritise older women's health issues, including the incidence of and mortality from non-communicable disease (NCDs). This is the first systematic review to address the health, wellbeing and healthcare utilization of older SSA women.

METHODS

Studies with primary analysis of health, wellbeing and/or healthcare utilization outcomes for women over the age of 50 from SSA countries were included. Databases searched include EMBASE, Scopus and Psycinfo.

FINDINGS

About 26 studies from six SSA countries met inclusion criteria. Studies regarding NCDs predominated (n = 12), followed by healthcare utilization (n = 4), disability (n = 4), wellbeing (n = 2), depression (n = 2) and HIV (n = 2). Every study indicated significantly lower self-rated health and wellbeing, higher rates of depression, hypertension, obesity, disability or weakness for women compared with men. The studies also indicated that older women use healthcare more often, and choose public over private facilities more often.

INTERPRETATION

The studies in the review had large, diverse samples. This review demonstrates the need for more gender-specific studies to better understand the unique challenges older women face in managing NCDs in particular.

Public and health policy for the aged in Africa to the South of Saara

OBJECTIVE

to know the social and health responses for the elderly in sub-Saharan Africa.

METHODS

An integrative literature review.

RESULTS

There is a lack of specialized health care to meet the real needs of the elderly, and the shortage of health professionals does not contribute favorably to this situation. There is a small number of facilities for the elderly and most of them are inadequate. Although there are models of care as well as social and health support policies for the elderly, there are still inequities/inequalities in access to these policies, especially for the most disadvantaged populations.

CONCLUSION

Social and health policies for the elderly in Sub-Saharan Africa are below standard and appropriate economic, political and social intervention is required.

"Old people problems", uncertainty and legitimacy: Challenges with diagnosing Parkinson's disease in Kenya

Very little is known about the experience of people living with Parkinson's disease (PD) in low- and middle-income countries, such as those in sub-Saharan Africa. The number of specialists in the region is low and awareness is limited among the population and healthcare professionals. Drawing on ten months of ethnographic fieldwork in urban and rural Kenya with 55 people living with PD (PwP), 23 family members and 22 healthcare professionals from public and private clinics, we set out to understand the experience of diagnosis among PwP in Kenya. The diagnostic journeys of our study participants were typically long, convoluted and confusing. Lack of relevant information, combined with comorbidities and expectations about 'normal' ageing, often conspired to delay interactions with health services for many. There often followed an extended period of diagnostic uncertainty, misdiagnosis and even 'undiagnosis', where a diagnostic decision was reversed. Following diagnosis, patients continued to lack information about their condition and prognosis, making it difficult for friends, family members and others to understand what was happening to them. We suggest that awareness of PD and its symptoms needs to improve among the general population and healthcare professionals. However, diagnosis is only the first step, and needs to be accompanied by better access to information, affordable treatment and support.

Instruments used to assess quality of life of older adults in African countries: a scoping review

Background

Over 60% of the population in sub-Saharan Africa, live in informal settlements (slums) with little or no resources. To be prepared to meet the needs of older people living in slums, it is necessary to know more about their quality of life (QoL). The objective of this review is to identify instruments, which can be used by researchers to assess the QoL of older adults living in African countries, especially those dwelling in slums.

Methods

A scoping review was performed using the databases Scopus, PubMed, and ISI Web of Science to retrieve studies published from January 2008 – September 2020. Studies were included if they reported generic QoL instruments, focused on adults with a mean age ≥ 50 and were conducted in African countries.

Results

In total, 18 studies were included using 7 unique instruments to measure QoL (EUROHIS-QOL-8, SWLS, WHOQOL-OLD, the WHOQOL-BREF, SF-36, SF-12 and RAND-38). All instruments could be interviewer-administered and had 5–36 items. However, little is known about their psychometric properties (validity and reliability), time-investment and cultural sensitivity of the domains included in the instruments.

Conclusions

Even though this review retrieved instruments used to assess QoL of older adults in African countries, there is a need for further research on adjustment and validation of currently existing QoL instruments. In addition, the development and validation of a new instrument which can be used in (illiterate) older populations, living in slums in Africa should be considered.

Health, quality of life, and wellbeing of older slum dwellers in sub-Saharan Africa: A scoping review

A growing population of older adults resides in sub-Saharan Africa's urban slums. Although environmental conditions in slums are adversarial, there is limited knowledge on the wellbeing of older adults residing in these settings. This review sought to understand the scope, extent, and nature of current research on the health and wellbeing of older slum dwellers in sub-Saharan Africa. We searched 8 bibliographic databases for studies examining the health and wellbeing of older slum dwellers in the region. We also completed a grey literature search. The literature search together yielded 3,388 records, of which we selected 25 for review following a rigorous screening process. The included studies covered a variety of health issues of concern to older slum dwellers: (1) disease and injury prevalence; (2) self-assessed health and quality of life status; (3) physical/mental health impairment and disability; (4) healthcare access and utilisation; and (5) sociodemographic disparities in health and wellbeing. The gaps in this literature include a regional bias in research efforts, near absence of non-slum control samples, and limited research on the health impacts of the built environment of slums. Suggestions for future research are presented.

Slums, Space, and State of Health-A Link between Settlement Morphology and Health Data

Approximately 1 billion slum dwellers worldwide are exposed to increased health risks due to their spatial environment. Recent studies have therefore called for the spatial environment to be introduced as a separate dimension in medical studies. Hence, this study investigates how and on which spatial scale relationships between the settlement morphology and the health status of the inhabitants can be identified. To this end, we summarize the current literature on the identification of slums from a geographical perspective and review the current literature on slums and health of the last five years (376 studies) focusing on the considered scales in the studies. We show that the majority of medical studies are restricted to certain geographical regions. It is desirable that the number of studies be adapted to the number of the respective population. On the basis of these studies, we develop a framework to investigate the relationship between space and health. Finally, we apply our methodology to investigate the relationship between the prevalence of slums and different health metrics using data of the global burden of diseases for different prefectures in Brazil on a subnational level.

Older People, Mobility and Transport in Low- and Middle-Income Countries: A Review of the Research

Older populations are rising globally, which in high-income countries has helped to generate a growing literature on the impact of ageing on travel requirements and transport policy. This article aims to provide an initial assessment of the state of knowledge on the impact on transportation policy and usage of the increasing numbers of older people in low- and middle-income countries (LAMICs), through a review of the literature relating to older people and transportation. As both the academic and policy/practice-related literature specifically addressing ageing and transport in LAMICs is limited, the study looks beyond transportation to assess the state of knowledge regarding the ways in which older people’s mobility is affected by issues, such as health, well-being, social (dis)engagement and gender. We find significant knowledge gaps, resulting in an evidence base to support the implementation of policy is lacking. Most research in low-income countries (LICs) is either broad quantitative analysis based on national survey data or small-scale qualitative studies. We conclude that, although study of the differing contexts of ageing in LAMICs as they relate to older people’s mobilities and transport use has barely begun, institutions which both make and influence policymaking recognise the existence of significant knowledge gaps. This should provide the context in which research agendas can be established.

Sociodemographic Characteristics and Health Profile of the Elderly Seeking Health Care in Kampala, Uganda

Aging entails health challenges globally, but pertinent data from low-income countries like Uganda remains scarce. A cross-sectional study was carried out at Mulago National Referral Hospital in Kampala, among 134 patients (38% men and 62% women) aged ≥60 years. Data was collected on sociodemographic characteristics, medical disorders, cognitive function, hearing handicap, and functional status, that is, Basic Activities of Daily Living (BADL) and Instrumental Activities of Daily Living (IADL). The participants had high independency in BADL (89%) and IADL (75%). The most common medical conditions were bone/joint pain (35%), hypertension (24%), and visual problems (20%). More women (54%) than men (37%) reported bone and joint pain. The majority (80%) of the participants did not report any hearing handicap, and half (54%) did not have any cognitive impairment. Dependency in IADL was associated with advanced age, being female, and being financially dependent, and the risk of having a hearing handicap was higher among those above the median age (68 years). In adjusted models, the effects remained similar although statistical significance was only achieved for advanced age versus dependency in IADL (RR: 2.38, 95% CI: 1.12-5.08) and hearing handicap (RR: 2.67, 95% CI: 1.17-6.12). Thus, socioeconomic status and gender are relevant aspects when attempting to understand the health profile of the elderly in Kampala, Uganda.

Musculoskeletal health conditions among older populations in urban slums in sub-Saharan Africa

BACKGROUND

Debate on the burden of musculoskeletal (MSK) conditions in lower and middle income countries is intensifying; yet, little knowledge so far exists on patterns and impacts of such conditions among general or older adult populations in sub-Saharan Africa (SSA). The objectives of this study are to examine the prevalence, potential predictors, and sequelae of MSK among older adults residing in two low resource informal urban settlements or "slums" in Nairobi Kenya.

METHODS

Data on older adults aged 60 years and over from two unrelated cross-sectional surveys on the older slum populations are used: a 2006/7 survey on the social, health, and overall well-being of older people (sample N = 831), and a 2016 survey on realities and impacts of long-term care and social protection for older adults (sample n = 1026). Uni and multivariate regressions on the 2006/7 data are employed to examine relationships of back pain and symptoms of arthritis with sex, age, wealth, unemployment, diagnoses of hypertension, and diabetes; and with indicators of subjective well-being and functional ability. Descriptive frequencies and chi-squared tests of association are used on 2016 data to identify the overall prevalence and locations of activity limiting MSK pain, and sex differences in these.

RESULTS

Prevalence of past month back pain and past 2 week symptoms of arthritis was 44% and 42.6%, respectively. Respective prevalence of past month activity limiting back pain and joint pain was 13.9% and 22.7%. A total of 42.6% of slum residents with a current health problem report MSK as the most severe problem. In multivariate regressions, female sex, unemployment, and diagnosis of hypertension are predictive of back pain and symptoms of arthritis. Both conditions are associated with raised odds of having lower quality of life, poorer life satisfaction, and depressive symptoms, and with mobility impairments and self-care difficulties.

CONCLUSIONS

MSK conditions are salient, and a likely key cause of impaired subjective well-being and functioning among older slum populations in SSA. Further research on determinants and consequences of such conditions in older slum populations is required to inform debate on responses to MSK as part of efforts to reorient SSA health systems to aging and to improve slum health.

Toward "Age-Friendly Slums"? Health Challenges of Older Slum Dwellers in Nairobi and the Applicability of the Age-Friendly City Approach

A majority of urban residents in sub-Saharan Africa (SSA) and other developing regions live in informal settlements, or slums. Much of the discourse on slum health centres on younger generations, while an intensifying agenda on healthy ageing as yet lacks a systematic focus on slums. Similarly, the global age-friendly cities (AFC) movement does not, thus far, extend to slums. This paper examines the particular challenges that a slum-focused age-friendly initiative in SSA may need to address, and the relevance of present AFC indicators and domains for initiatives to advance the health and well-being of older slum dwellers. The analysis builds on the case of two slum communities in Nairobi, Kenya. It analyzes two bodies of relevant evidence from these settlements, namely on the health and social circumstances of older residents, and on the local application and measurement of AFC indicators. The findings point to a set of unsurprising, but also less obvious, core health and social adversities that an age-friendly initiative in such settlements would need to consider. The findings show, further, that the current AFC domains and indicators framework only partly capture these adversities, but that there is potential for adapting the framework to be meaningful for slum settings. The paper concludes by underscoring the need for, and opportunities inherent in, the pursuit of an “age-friendly slums” initiative going forward.

The Safety of PsA-TT in Pregnancy: An Assessment Performed Within the Navrongo Health and Demographic Surveillance Site in Ghana

BACKGROUND

Group A meningococcal disease occurs in large epidemics within the meningitis belt of Africa that includes northern Ghana. Major epidemics in the meningitis belt have infection rates ranging from 100 to 800 per 100 000 population. In 2012, a group A meningococcal conjugate vaccine, PsA-TT (MenAfriVac), was introduced into the region in large campaigns.

METHODS

We report here on the safety of this vaccine when used in pregnant women in the Navrongo region of Ghana.

RESULTS

Rates of events in 1730 immunized pregnant women and their infants were compared to the rates of the same events in pregnant women who did not receive the vaccine during the campaign and also to women who were pregnant in the prior year.

CONCLUSIONS

We found no evidence of any safety concerns when this vaccine was administered during pregnancy.